KSZ8841-32MQL Micrel Inc, KSZ8841-32MQL Datasheet - Page 31
KSZ8841-32MQL
Manufacturer Part Number
KSZ8841-32MQL
Description
Single Ethernet Port + Generic (32-bit) Bus Interface( )
Manufacturer
Micrel Inc
Specifications of KSZ8841-32MQL
Controller Type
Ethernet Controller, MAC
Interface
Bus
Voltage - Supply
3.1 V ~ 3.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
128-MQFP, 128-PQFP
Operating Supply Voltage (typ)
3.3V
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
128
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
576-1631 - BOARD EVALUATION KSZ8841-16MQL
Current - Supply
-
Lead Free Status / Rohs Status
Compliant
Other names
576-2115
KSZ8841-32MQL
KSZ8841-32MQL
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Auto Negotiation
The KSZ8841M conforms to the auto negotiation protocol as described by the 802.3 committee to allow the port to
operate at either 10Base-T or 100Base-TX.
Auto negotiation allows unshielded twisted pair (UTP) link partners to select the best common mode of operation. In auto
negotiation, the link partners advertise capabilities across the link to each other. If auto negotiation is not supported or the
link partner to the KSZ8841M is forced to bypass auto negotiation, the mode is set by observing the signal at the receiver.
This is known as parallel mode because while the transmitter is sending auto negotiation advertisements, the receiver is
listening for advertisements or a fixed signal protocol.
The link setup is shown in the following flow diagram (Figure 9).
October 2007
Micrel, Inc.
B y p a s s A u t o N e g o t i a t i o n
Start Auto Negotiation
Force Link Setting
and Set Link Mode
YES
NO
Figure 9. Auto Negotiation and Parallel Operation
Attempt Auto
Negotiation
Listen for 100BASE-TX
31
Link Mode Set ?
Link Mode Set
Operation
Join Flow
Parallel
Idles
YES
NO
Listen for 10BASE-T L i n k
Pulse s
KSZ8841-16/32 MQL/MVL/MBL
M9999-102207-1.6